Thinking about the thread "things you vowed before becoming a parent", do you remember making any childhood vows on things you would or wouldn't do when grown up, realistic or otherwise? And did you keep them?
Aged ten, I swore never to smoke or drink alcohol. I kept to the former, but not the latter. One of the adults quoted me on it when I did drink a few years later!
I remember also putting all my Lego away "to give to my children"; that didn't last.